Power-transmission mechanism for motor vehicles



June 7,1927. 1,631,83'Z

. G. M. STONE POWER TRANSMISSION MECHANISM FOR MOTORIVEHICLES Filed March 17. 1925 2 Sheets-Sheet l WITNESSES Arrbamzvs June 7, 192,7.

G. M. STONE POWER TRANSMISSION MECHANISM FOR MOTOR VEHICLES Filed March 17, 1925 2 Sheets-Sheet 2 INVENTOR G. 21.560109.

ATTORNEYS WlTNESSFj Patented June 7, 1927.

UNITED This power trans invention relates t A E-S GEORGE moimon s ronn, or enrswonn, Iowa. i

. rownn-rnansmssron MECHANISM FOR MOTOR VEHICLES.

Application filed March 117, 1925. Serial 0 an improved mission or drive mechanism for tractors,

motor trucks and claimed in my April 27, 1915. of the invention is the provision of a mechanism for transmitting power from a suitable drive shaft'to. a vehicle so that th 'may be driven speeds in one d tions or whereby one of the driven while the other section remains stathe axles of e two sections or'axles simultaneously and at equal irection or in opposite direcsections may be tionary thus effectively permitting the shaft a short angular turn the same may be pelled at )receding provision of a vehicle, and may be driven speeds by the said differential tality to cause ei tively driven.

This inven from a con tailed description,

panying dr specification the invention is n stood that the disclosure, changes and modifications which fine no material dep features of the inventlon as ex or vehicle to be propelled forwardly or backwa-rdly or in event of the vehicle requiring substantially a right angle to its line of travel.

A further object of the invention is the a device for transmitting power from a suitable drive shaft'to the axles of sideration o in view awmg being susceptible of appended claim.

In the drawings:

higure 1 1s ing my invention applied thereto.

Figure 2 taken along Figure 3 sleeve slidable and keyed to Figure 4 is a of a differential em mechanism Referring mounted an shaft 12. disc 13 whi l4 and 15. mounted in is a transverse the line 2- -2 of Figure 4.

is a

longitudinal vertical se for transmitting more partlcularly to power.

engine 11 This shaft ch in The bearings on the frame.

bracing my impr in which either of the axles simultaneously and at equal usual differential mechanism,

embracing an instrumenther of the axles to be posi' tion will be best understood f the following deof the accomforming a part of the nevertheless it is to be underot confined to such shall dee arture from the salient pressed n the a plan view of a tractor showvertical section view in perspective of a' a driven shaft.

ition ove d the drawings, 10 designates a frame upon which is for rotating a drive operates a friction turn drives friction discs disc 14 drives a shaft 16 The shaft 16 drives a gear 17 which meshes with a ring gear 18 removably secured by means of bolts 19 to flanges20 formed upona sectional differential casing 21. This cas- 7 ing is located withinia housing 22-bolted to ential casing 21, projects through the housing 22 and is mounted in bearings'30 on the with a sprocket 27-ona- Another shaft 29 exframe 10 and drives a' sprocket "31 which 7 in turn drives a chain 32. This chain drives the other tractor wheel Slidable on the shaft 23 is a sleeve 34. This sleeve is provided with grooves-ad'ap fled to receive keys 35 whichpermit the sleeve to'slid e upon the shaft but cause the sleeve to drive theshaft when said sleeve is'revolvedpli The inner end of the sleeve is provided with a clutch element 36 which is adapted to mesh with a clutch element 37 of a differential gear 38. The gear 36 also meshes with a clutch element 39 formed in the differential spider 40. The spider is provided with four arms 41 upon which are rotatably mounted gears'42 meshing with the differential gear 38 and a differential gear 43. The gear 43 has a clutch element 44 adapted to engage with a clutch element 45 on the inner end of a sleeve 46 which is slidable on the shaft 29 and is locked with shaft 29 by means of keys 47 which permit sliding of the sleeve on the shaft but will cause said sleeve to revolve the shaft 29 when said sleeve is rotated.

A clutch element 48 is formed "within a recess in the spider 40 which is opposite to the gear 39 and is adapted to engage with clutch element 45 when the sleeve 46 is moved inwardly by means of a yoke 49 engaging the groove 50 in said sleeve. A yoke 51 engages a groove 52 in the sleeve 34 and is adapted to cause the sleeve to slide in 0pof the shaft 23.

The operation of my device is as follows:

A driving shaft 16 causes the gear 17 to rotate the differential casing 21 in the usual manner by means of the gear 18 secured to said casing. Revolution of the casing causes rotation of the gears 42 on the arms 41 of the spider which in turn rotate the gears 38 and 43. When both of the clutch elements 36 and 45 are in meshing relation With the respective clutch elements 37 and 44 of the differential, gear 38 and the clutch lVhen the clutch element 45 is moved into engaging relation with the gear 48 as shown,

in Figure 4 the differential or-equalizing feature of the device is destroyed and the power will all be applied to shaft 29 for causing driving of the wheel 33 while when the clutch element 36 of sleeve is moved into engaging relation with the clutch element 39 the differential action will beadestroyed and all the power will be applied to shaft 28, that is, provided that the sleeve 46 has been moved with the clutch element 44. But in either case the differential gear 38 or 43 will idle when either of the clutch elements on the shaft engages with the clutch elements formed in the differentials. lVhen either of the clutch elements 36 or 45 are in engaging" relation with the clutch elements39 or 48 respectively of the spider the Wheel which is being driven will cause a vehicle to turn at an angle to its former outwardly with the clutch element engaging path of travel as is determined by the operator of the vehicle.

WVhen both of the clutch elements 36 and 45 have beenmoved into engaging relation withthe respective clutch elements 39 and 48, both shaft sections are looked through the differential spider and the shaft sections "are driven as a single shaft.

tial gears, a spider, pinions on the spider meshingwith the gears, the spider and pinions operatively connecting the casing with the gears for causing rotation of said gears, shafts extending into thecasing, sleeves slidable on the shafts and keyed to the shafts, said sleevesbeing provided with clutch elements, said spider having oppositely disposed clutch elements, the differential gears being provided with clutch elements opposite the clutch elements on the spider, means for causing the clutch elements of the sleeves to engage a clutch element on the differ-ential gear or a clutch shaft for causing one of the shafts to be positively driven or for simultaneously driving both shafts independently of the differential. i

GEORGE MONROE STONE.

element on the spider, when a sleeve is moved alongits respective 

